The utility model discloses an electrochromic two-dimensional code device with multiple anti-counterfeiting functions. Wherein a two-dimensional code device, a solar cell and a control switch are arranged in the shell, the surface of the shell is coated with a protective film, the two-dimensional code device comprises an electrochromic film, and the electrochromic film is formed by sequentially superposing a transparent plastic substrate, a transparent conductive layer deposited on the substrate, an electrochromic layer, an electrolyte layer, a transparent conductive layer and a protective film; the two-dimensional code device is connected with the first divider resistor to form a first voltage division circuit; the two-dimensional code device is connected with the second divider resistorto form a second voltage division circuit; the solar cell is selectively connected with the first voltage division circuit or the second voltage division circuit through the power supply control switch, and different voltages are applied to the electrochromic film, so that the electrochromic film presents different two-dimensional code patterns or colors, and information represented by the two-dimensional code is changed.